来源：ACS PublicationsRare earth elements (REEs), comprising lanthanides, scandium, and yttrium, are increasingly vital for advanced technologies, yet their separation remains challenging. This study presents a selective and efficient approach for cerium (Ce) recovery from REE concentrates via ex situ electrochemical oxidation coupled with solvent extraction in a continuous capillary system. Ce3+ is electrochemically oxidized to Ce4+ and subsequently extracted from La3+ using di(2-ethylhexyl)phosphoric acid (D2EHPA) in n-octane. Key extraction parameters, including capillary dimensions, flow regi...
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2025
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来源：ACS PublicationsIn summary, This work has demonstrated, for the first time, that SALI is a viable approach to open pores and gain access to OMS in RE-cluster-based MOFs. We have used Y-CU-45 as a platform for these studies, as this MOF has unique 6-connected RE6-cluster nodes, with 6 coordinatively unsaturated sites that are capped by modulators from the synthesis of this MOF, partially blocking its pores. Seven different ligands were tested for SALI experiments, and it was observed that their intrinsic acidities are critical to promoting the displacement of the original capping ligands on ...
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2025
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来源：ACS PublicationsRare earth elements (REEs) are essential to modern technologies yet are typically sourced from regolith clays containing cation-exchanging minerals such as kaolinite, and conventional extraction methods often rely on environmentally harmful organic solvents. Deep eutectic solvents (DESs) provide a more sustainable alternative due to their tunable solvation properties, low volatility, and high thermal stability. Kaolinite contributes nanoscale features that enhance its suitability for REE separations, including its layered morphology featuring nanometer-scale layer thickness,...
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2025
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来源：ACS PublicationsIn recent years, hybrid rare-earth double perovskites (HREDPs) have garnered interest, owing to their significant optical properties. However, we will combine optical properties and other physical properties to promote the functional diversity of materials, so we report the successful synthesis of an HREDP, (HQ)4KTb(NO3)8 (1, HQ = quinuclidine cation), and investigate the structure–property relationships underlying its multifunctional characteristics. Differential scanning calorimetry (DSC) reveals two pairs of characteristic peaks at 262/288 K upon heating and at 254/282 K ...
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2025
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